//
// "$Id: Fl_Slider.H 9553 2012-05-28 15:39:12Z greg.ercolano $"
//
// Slider header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file.  If this
// file is missing or damaged, see the license at:
//
//     http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
//     http://www.fltk.org/str.php
//

/* \file
   Fl_Slider widget . */

#ifndef Fl_Slider_H
#define Fl_Slider_H

#ifndef Fl_Valuator_H
#include "Fl_Valuator.H"
#endif

// values for type(), lowest bit indicate horizontal:
#define FL_VERT_SLIDER		0
#define FL_HOR_SLIDER		1
#define FL_VERT_FILL_SLIDER	2
#define FL_HOR_FILL_SLIDER	3
#define FL_VERT_NICE_SLIDER	4
#define FL_HOR_NICE_SLIDER	5

/**
  The Fl_Slider widget contains a sliding knob inside a box. It is
  often used as a scrollbar.  Moving the box all the way to the
  top/left sets it to the minimum(), and to the bottom/right to the
  maximum().  The minimum() may be greater than the maximum() to
  reverse the slider direction.

  Use void Fl_Widget::type(int) to set how the slider is drawn,
  which can be one of the following:

  \li FL_VERTICAL - Draws a vertical slider (this is the default).
  \li FL_HORIZONTAL - Draws a horizontal slider.
  \li FL_VERT_FILL_SLIDER - Draws a filled vertical slider,
      useful as a progress or value meter.
  \li FL_HOR_FILL_SLIDER - Draws a filled horizontal  slider,
      useful as a progress or value meter.
  \li FL_VERT_NICE_SLIDER - Draws a vertical slider with  a nice
      looking control knob.
  \li FL_HOR_NICE_SLIDER - Draws a horizontal slider with  a
      nice looking control knob.

  \image html  slider.png
  \image latex slider.png "Fl_Slider" width=4cm
*/
class FL_EXPORT Fl_Slider : public Fl_Valuator
{

	float slider_size_;
	uchar slider_;
	void _Fl_Slider();
	void draw_bg(int, int, int, int);

protected:

	// these allow subclasses to put the slider in a smaller area:
	void draw(int, int, int, int);
	int handle(int, int, int, int, int);
	void draw();

public:

	int handle(int);
	Fl_Slider(int X,int Y,int W,int H, const char *L = 0);
	Fl_Slider(uchar t,int X,int Y,int W,int H, const char *L);

	int scrollvalue(int pos,int size,int first,int total);
	void bounds(double a, double b);

	/**
	  Get the dimensions of the moving piece of slider.
	*/
	float slider_size() const {
		return slider_size_;
	}

	/**
	  Set the dimensions of the moving piece of slider. This is
	  the fraction of the size of the entire widget. If you set this
	  to 1 then the slider cannot move.  The default value is .08.

	  For the "fill" sliders this is the size of the area around the
	  end that causes a drag effect rather than causing the slider to
	  jump to the mouse.
	*/
	void slider_size(double v);

	/** Gets the slider box type. */
	Fl_Boxtype slider() const {
		return (Fl_Boxtype)slider_;
	}

	/** Sets the slider box type. */
	void slider(Fl_Boxtype c) {
		slider_ = c;
	}
};

#endif

//
// End of "$Id: Fl_Slider.H 9553 2012-05-28 15:39:12Z greg.ercolano $".
//
